Death person vehicle ownership transfer.

Hi, im from Bangalore (Karnataka).I bought scooty on jan 2023 and owner(male) died 2020. I transferred money on Phonepe and While seling they took my signature on paper. Paper stating that i will be responsible for future activities and they gave me RC(death owner), insurance paper and scooty. nnAs per the RTO rules Death person vehicle ownership can be transferred only to hisher legal successor. But they have not transferred RC to owners wife name. Askd them to do as per the rules then only i can register the vehicle in my name. Now they are telling me that after sales and as per the agreement (written paper) we dont do from seller side, it will taken care of purchaser. nNow the problem is, the person(leaga successor) should be present in RTO office while signature of the ownership form. But seller is not willing to get the legal person to the RTO and he is telling me convince any RTO consultant to mke it possible without person presents. Please guide me with this nd do the needful.